Its not ideal in decks with smaller creatures, like Elves of Goblins, but more expensive creatures like Krakens, Leviathans, or Eldrazi will make exceptional use of this artifact
They've even got a complete set of Lord of the Rings including every serialized card (except the 1:1 The One Ring) for only a cool $1,000,000
If another player gains control of Savvy Trader, that player can't play the card, and you still can
There are a plethora of single target reanimation spells available in black and white, with Animate Dead being one of the most (in)famous
Ashling, Flame Dancer This red creature feels good in a prowess or Ruby Storm deck
I can recall some players actually choosing to roll a dice to determine their choice rather than guess because they felt like their opponent was that much better than 50/50 at gaming it and it would cut down their edge